User's Manual

7ML19985KB01 SITRANS LR560 (mA/HART) – INSTRUCTION MANUAL Page 93
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Parameters
2.7.5.3. Average Amount
The fraction of the old shot data that is kept for averaging purposes. A
higher value will give a smoother profile at the expense of a slower echo
profile response.
2.7.6. Echo Quality
2.7.6.1. Confidence
Indicates echo reliability: higher values represent better echo quality. The
display shows the echo confidence of the last measurement. Echo
Threshold (2.7.3.2.) defines the minimum criterion for echo confidence.
Open the menu Device – Echo Profile Utilities and click on the tab Echo
Profile.
2.7.6.2. Echo Strength
Displays the absolute strength (in dB above 1 μV rms) of the echo selected
as the measurement echo.
Open the menu Device – Echo Profile Utilities and click on the tab Echo
Profile.
2.8. TVT setup
2.8.1. Auto False Echo Suppression
Used together with Shaper Mode (2.8.4.) to screen out false echoes in a vessel
with known obstructions.
A ’learned TVT’ (time varying threshold) replaces the
default TVT over a specified range.
• See Shaper Mode (2.8.4.) on page 126 for a more detailed explanation.
• To set via SIMATIC PDM, see Auto False Echo Suppression on page 46.
• To set via local operation, see
AFES (Auto False Echo Suppression) Wizard
on page 77.
Values
0.0 to 1.0
Default: 0.75
Values (view only)
0 to 99
---- Shot not used
Related Parameters
Echo Threshold (2.7.3.2.)
Values (view only)
–20 to 99
Note: Default settings in the parameter tables are indicated with an asterisk (*)
unless explicitly stated.
Note: We recommend setting Auto False Echo Suppression either via
SIMATIC PDM or via local operation using the Auto False Echo Suppression
wizard.